Valve for pneumatic tires, &amp;c.



No. 676,400. Patented lune Il, I90l.

J. A. SPENCER.

VALVE FOR PNEUMATIC TIRES, &c.

(Appl t nm dJ 1y1s 1900 (No Model.)

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JOHN A. SPENCER, or Los ANGELES, CALIFORNIA.

VALVE FOR PNEUMATIC TIRES, 84.6.

SE'ECIFICAT'ION forming part of Letters Patent No. 676,400, dated .rune 11, 190i.

Application led .Tnly 18, 1900.

To @ZZ whom, t may con/cern.-

Beit known that I, JOHN A. SPENCER, a citizen of the UnitedStates, residing at Los Angeles city, in the county of Los Angeles and State of California,have invented certain new and useful Improvements in Valves for Pneumatic Tires and for Analogous Uses, of which the following is a full, clear, and exact description or specification, reference being had to the annexed drawings and to the letters marked thereon.

My invention,\vl1ioh consists of certain new and useful improvements in valves for pneumatic tires, inliation-tubes, and which may be used for analogous purposes, has for its object not only to produce a reliable closing and opening valve, but at the same time it has for its object to enable the same valve to be used not only for pneumatic tires wherein an inflation-tube is used, but also for pneumatic tires wherein the valve is fastened into a nozzle projecting from the inner circle of the tire itself and in which class of tires an inflation-tube is not used, being in such cases unnecessary.

On the annexed drawin gs,Figii re lis a transverse vertical section of my improved valve, shown as fastened into a tire wherein an ination-tube is not used. Fig. 2 is a corresponding view of my improved valve, shown as applied to a tire wherein an inflation-tube n is used. Fig. 3 is a plan of a portion of the interior of a portion of a tire, showing the up-v per end of my improved valve fastened therein and corresponding to Fig. l. Fig. 4 is a plan of a part of the interior portion of a tire and a portion of the ination-tube with my valve fastened into the inflationtube thereof, corresponding to Fig. 2. Fig. 5 is an inverted plan of the lower part of the valvecasing and dust-cap. Fig. 6 is an elevation of the conical valve and valve-stem. Fig. 7 is a plan of Fig. 6. Fig. 8 is a plan of the square nut screwed upon the lower part of the valve-stem. Fig. 9 is an elevation of the dustcap, showing the vertical projecting pins constituting the pin-Spanner. Fig. 10 is a plan of the dust-cap.

In all of the draw-ings for the purpose of rendering the construction, arrangement, and operation of my improvedv valvular device and its several parts the better understood a Serial No. 24,118. (No model.)

scale considerably larger than the natural or real size of the valvular device constituting my invention is adopted.

` My improved valvular device consists, as shown upon the annexed drawings, of the cylindrical casing, (marked A,) which is formed with a screw-thread exteriorly. The Valvestem is marked B, and at its upper end it carries the conical valve C, which rests in the corresponding seat formed in the upper part of the valve-casing A. The part of the stem immediately beneathV the valve C is formed with laterally-projecting wings (L ci, which enter corresponding recesses vertically cut in that portion of the valve-casing A immediately below the conical valve-seat. The remainder of the valve-stem B is cylindrical and the lower part thereof has a screw-thread out upon it, as shown at Figs. 1, 2,- and 6. The spiral spring D surrounds the valve-stem B, and the spring D fits easily into that part of the valve-casing beneath the portion thereof wherein the vertical grooves are cut, this portion of the valve-casing being made larger, so as to constitute a shoulder at the upper end thereof, against which the top of the spiral spring is pressedby the nut E, screwed upon the lower part of the valve-stem B, as shown. n The nut E after having been screwed upon the valve-stem B as far as can conveniently be done by hand has then applied to it thedust-cap F, the pins b b of which enter the two holes or recesses c c in the nut E, as shown at Fig. 8, and the arrangement for turning the dust-cap around by applying the thumb and finger to its milled head enables the nut E to be screwed up on the valve-stem B to any extent necessary for compressing the spring D. The nut E may, indeed, be screwed so far up into the interior of the valvecasing as to allow the dust-cap to be closed upon or against its seat G in the smooth cylindrical interior of the bottom of the valvecasing, and a Washer of rubber or other material is placed in this valve-seat to allow the dust-cap to make a perfectly-tight closure thereof, while the cylindrical portion of the dust-cap also 'rits well and closely into the cylindrical bottom portion of the valve-casing thereof, giving certainty of a perfect closing of the valve and the maintenance of all parts thereof in line with the central axis of the de- IOO . stem and valve tighter upon its seat.

vice. In addition" the upper portion of the dust-cap may have some screw-threads, as shown at Fig. 9, cut upon it to it into the lower part ofthe screwed portion of the socket E' for the air-pump connection and to enable the internal and external screws of the dustcap F to operate without interference and at the same time to continuously draw down the It is essential that the screw within the socket E and the screw upon the lower part of the valve-stem B should be of slightly-diterent pitch, the pitch of the screw on the upper outer part of the dust cap being slightly slower than the pitch of the screw on the valveu stem.

In Figs. l and 3 the tire is marked I-I, and in Figs. 2 and 4 the tire is also marked H, while the ination-tube is marked I in Fig. 2.

In Figs. l and 2 the part marked J is the flap-valve at the top of the device, and this preferably consists of a disk of vulcanized india-rubber fastened hingewise at one point of its circumference to the upper end of the outer valve casing or sheath Q. This valve J is mounted with a piece of hard rubber or metal J at its under side, against which the upper extension B of the valve-stem B presses, so as to lift the valve G when air is being compressed into the tire, inflation-tube, or other receptacle, and the pressure of the air within the tire, inflation-tube, or other receptacle Van elastic washer N beneath it.

closes this valve J at all other times. In both Figs. l and 2 the part marked Ky is a transverse section of the wooden tire commonly employed for holding and supporting inflated tires of bicycles, tricycles, or other vehicles, and the screw-nut R when tightened up against the tire K holds the outer casing Q in that wooden tire K.

As shown at Fig. l, the valvular device is screwed into the outer casing Q, while it is held in the nozzle L of the tire H or in the inflation-tube I in Fig. 2, and as the lower part of the valve-'casing A is milled circumferentially, after the manner of the milling upon the lower-part of the dust-cap F, it follows the valve-casing A and all its connected parts are easily removable from or out of the tire II, Fig. 1, or the inflation-tube I, Fig. 2, by simply screwing the valve-casing A and the parts itcontains out of the outer casing Q, while the outer casing Q remains firmly held in the nozzle L of the tire H by the bindingwire, as shown at Fig. l, and into the infiation-tube I, Fig. 2, by means of the metallic cap M, screwed onto the upper end of the outer 'casing Qof the valvular device, having When the head thus formed of the valvular device is placed through the hole in the inflation-tube, then the washer O and nut P are screwed up over the exterior of the casing until that portion of the inflation-tube between the washer Maud the washer O is sufciently compressed.

It will be apparent from the drawings in connection with the preceding parts of this specification that the device may not only be quickly, easily, and eifectually operated, but when closed the interior thereof is completely protected from dust and dirt; while it will be further apparent that the whole valvular device is removable from and replaceable at any time in the tire H or in the inflation-tube I by merely screwing the valve-casing A and its contents out from the outer casing Q, when by means of a very slight taper, not capable of being shown on the drawings, which is cut so that the valve-casing A, as it is screwed to the fullest practical extent within the outer casing Q, becomes very tightly held therein, the tightness of joint being perfected by the compression of the elastic washer at the top of the valve-casing, as shown at Figs. l and 2. A further consequence and advantage of this arrangement is that while the valvular device is removable from the outer casing Q 'the said valvular device is interchangeable from any one valve-casing Q to any other valvecasing Q. Y

I would have it understood that my invention includes all such changes and moditications in the shape of the valve and its parts as may fall within the terms and scope ofthe following claims.

Having now described the nature of my said invention and the best system, mode, or manner I am at present acquainted with for carrying the same into practical effect, I desire to observe in conclusion that what I consider to be novel and original, and therefore claim as the invention to be secured to me by Iletters Patent, is as follows:

l. A valvular device for pneumatic tires and other compressed-air retainers,consisting of a valve-casing within which are contained a valve-stem with a valve at its upper end closing upon a seat at the upper end of said casing, with that part of the valve-stem below the valve having wings entering grooves in the corresponding part of said casing, an adjustable nut on the screw-thread of the lower end of the valve-stem, a spiral spring carried on said stem between said nut and a shoulder on said casing, and a dust-cap with pins thereon projecting upward for engaging with holes in said nut whereby said nut is screwed upward upon the valve-stem into or downward out of the interior of the casing, said dust cap also completely closing the valvular device against dirt and dust, said dust-cap being constructed so as to contain the valve-stem centrally, by the dust-cap entering so as to tit closely and screw into the cylindrical recess at the bottom of the casing, with a thread of slower pitch than the pitch of the screw on the valve-stem, the whole being attached to the tire, inflation-tube, or other receptacle, by being screwed into a sheath so as "to be removable and interchangeable, substantially as hereinbefore described.

2. rIhe valvular device consisting of the cylindrical casing screwed externally, the valve and valve-stem within that casing, the spring IOO IIO

on said valve-stem, the nut upon the screwed part ofthe valve-stem for compressing the spring uponsaid valve-stem between said nut and a shoulder at the upperinterior part of said casing the valve-stem having wings at its upper part entering recesses in the upper interior part of the valve-casing, said valve-casing having a recess at its lower end, a nut upon said valve-stem and a dustcap so constructed that said dust-cap acts as a pin-Spanner in addition to its functionas a dust-cap and operates said nut on the valvestein, said nut being formed with iiatl sides, and said dust-cap having a screw-thread of slower pitch than the pitch of the screw of the valve-stem iitting into the cylindrical recess in the bottom of said casing, the whole being attached to the tire, inflation-tube, or other receptacle, by being screwed into a sheath permanently fastened into the tire,`

inflation-tube or other receptacle so as to be removable and interchangeable,substantially as hereinbefore set forth.

3. A valvular device for pneumatic tires and other compressed-air retainers, consisting of a valve-casing within which are contained a valve-stem with a valve at its upper end closing upon a seat at the upper end of said casing with that part of the valve-stem below the valve having wings entering grooves in the corresponding part of said casing, an adjustable nut on the lower end of the valvestem, a spiral spring carried on said nut between said nut and a shoulder in said casing, and a dust-cap with pins thereon projecting upward for engaging with holes in said nut whereby said nut isscrewed upward into or downward out of the interior of the casing,

said dust-cap also completely closing the valve'y ular device against dirt and dust, said dust' screw-thread of slightly-slower pitch than the pitch of the screw-thread on the valvestem, the whole being attached to the tire, inflation-tube or otherA receptacle, by being screwed into a sheath so as to be removable and interchangeable, with the valveat the upper end of said sheath within the tire, in ation-tube or other receptacle, substantially as hereinbefore described.

'4. The valvular device consisting of the cy-` lindrical casing screwed externally, the valve and stem Within thatl casing, the spring on said valve-stem, the nut for compressing the spring upon said valve-stem between said nut and a shoulder at the upper interior part of said casing, the valve-stem having wings at its upper part entering recesses in the upper interior part of the valve-casing, said valvecasing having a recess at its lower end, a nut upon said valve-stem and a dust-cap so constructed that said dust-cap acts as a pinspanner in addition to its function as a dustcap and operates said nut on the valve-stem,

fsaid nut being formed with flat sides,`and 'saiddust-cap fitting into the cylindrical recess in the bottom of said casing, and screw- 'ing into the pumpssocket connection and onto the valve-stem simultaneously, the whole being attached to the tire, inflation-tube, or other receptacle, by being lscrewed into a sheath permanently fastened into the tire, inflation-tube or other vreceptacle so as to be removable and interchangeable, with the valve at the upper end of said sheath within the tire, inflation-tube or other receptacle, substantially as hereinbefore described. v

In testimony whereof I have hereunto setv my hand and seal, this 13th day of June, in

the year of our Lord 1900, in the presence of 

